/*
 * See the dyninst/COPYRIGHT file for copyright information.
 * 
 * We provide the Paradyn Tools (below described as "Paradyn")
 * on an AS IS basis, and do not warrant its validity or performance.
 * We reserve the right to update, modify, or discontinue this
 * software at any time.  We shall have no obligation to supply such
 * updates or modifications or any other form of support to you.
 * 
 * By your use of Paradyn, you understand and agree that we (or any
 * other person or entity with proprietary rights in Paradyn) are
 * under no obligation to provide either maintenance services,
 * update services, notices of latent defects, or correction of
 * defects for Paradyn.
 * 
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 * 
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

#if !defined (_R_E_AST_H_)
#define _R_E_AST_H_

#include "Widget.h"

class AstNode;
typedef boost::shared_ptr<AstNode> AstNodePtr;
class instPoint;

namespace Dyninst {
namespace Relocation {

class ASTWidget : public Widget {
 public:
  typedef boost::shared_ptr<ASTWidget> Ptr;

  static Ptr create(AstNodePtr, instPoint *);

  ASTWidget(AstNodePtr a, instPoint *p) : ast_(a), point_(p) {}

  bool generate(const codeGen &,
                const RelocBlock *,
                CodeBuffer &);
  
  TrackerElement *tracker() const;

  virtual ~ASTWidget() {}

  virtual std::string format() const;

 private:

  AstNodePtr ast_;
  // We need this for liveness
  instPoint *point_;
};

struct AstPatch : public Patch {
  AstPatch(AstNodePtr a, instPoint *b) : ast(a), point(b) {}
   
   virtual bool apply(codeGen &gen, CodeBuffer *buf);
   virtual unsigned estimate(codeGen &templ);
   virtual ~AstPatch();
   
   AstNodePtr ast;
   instPoint *point;
};



}
}
#endif
